Methods and systems of air bubble flushing in liquid cooled generators

A method of manufacturing a liquid cooled generator, comprising:

• forming a rotor having a central core defining a central axis a main stator winding wrapped around the central core;
• forming a first laminate at a first end of the central core and having a first orifice defining a first diameter wherein the central axis passes through the first orifice;
• forming a second laminate at a second end of the central core and having a second orifice defining a second diameter that is the same as the first diameter wherein the central axis passes through the second orifice;
• and
• forming a flow line along the central axis and passing through the central core and configured to extend from the first laminate to the second laminate, the flow line defining a third diameter that is larger than the first and second diameters,
• wherein the first diameter and the second diameter are configured such that air flow is permitted to pass through the orifices of the first and second laminates and to restrict the flow of a liquid through the orifices of the first and second laminates.